Eyeglass-mounting.



E. J. R. BEATTEY.

EYEGLASS MOUNTING.

APPLICATION FILED NOV. 23. 1916.

1,240,533. PatentedSept. 18, 191.7.

/9 J I, I 22 .4. a [r/z www UNITED STATES PATENT carton Specification ofLetters Patent.

Patented Sept. 18, 1917.

Application filed November 23, 1916. Serial No. 132,951.

as to prevent this screw from working loose.

by the movements of the lens upon lVith this and other ob ects in new,the

- invention consists of certain novel features of construction, as willbe more fully described, and particularly pointed out in the appendedclaims.

In the accompanying drawings:

Figure lis a side elevation of an eyeglass mounting wherein the lens issupported on the spring tongue, cooperating means being provided in boththe lens clamp and the screw for securing the latter in the clamp.

Fig. 2 is an edge view of an eyeglass mounting partly in sectionillustrating my improved means for locking the screw therein.

Fig. 3- is a greatly enlarged face view of one of the clamp membersshowing the squared tapering hole for the reception of the screw head inone of the lens straps.

Fig. 4 is an edge view of the lens strap sectioned on line H of Fig. 3.

Fig. 5- is an elevation of the screw showing its special form of lockinghead.

Fig. 6 is a section on line 6-6 of Fig. through the lens screw lookingin the direction of the arrow.

Fig. 7- is a section on line 77 of Fig. 5 looking in the direction ofthe arrow showing the square shape of the beveled portion of the head.

Fig. 8 is a sectional view similar to that shown in Fig. 7 but whereinthe beveled portion of the screw head is shown as being of hexagon shapeinstead of square.

Referring to the drawings, 10 designates the nose bridge portion of themounting and '11 the lug of the bridge which is attached to the saddleportion 12, which saddle portion in Fig. l is illustrated as having aclownwardly extending spring tongue 13 which bears against the edge 14of'the lens 15. This lens is shown as being mounted between the two lensclamps 16, as illustrated in Fig. :2. One of these clamps is tapped asat 17 for the reception of the threaded end of the screw 18 while theother provided with hole 19 is tapered of these straps is whose outerend as at 20, see Fig. l, and which tapering Jortion in some casessquare as est illustrated in Fig. 3.

When this tapered portion of the hole in the lens clamp is formedsquare, I preferably provide the tapered'portion :21 of the head of thescrew 18 correspondingly tapering and correspondingly squared in crosssection as best illustrated in Figs. ('5 and 7.

The space between the lens clamps in most mountings is a little greaterthan the width of the lens set therein and in this particular springtongue mounting, it is desired to leave a little space between theclamps and the lens to permit of a free action of this spring tongue,therefore in applying my im: proved form of lens screw to its seat, theclamps yield inwardly slightly and permit the corners 22 of the screw topass the flattened sides of the tapered portion of this hole, thuspreventing the screws from ever becoming accidentally backed out orloosened from its position, without the application of considerablepower through the use of a screw driver, at the same time permitting thedesired looseness of the lens between its clamping members.

I do not wish to be restricted to the forming of the tapered portion ofthe head of my locking screw, in the form of a square, as this head andits corresponding hole in the clamp member may be made hexagonal,octagonal or of any many sided figure having a plurality of angularfaces.

It is found in practice by providing a space between the arms 16normally greaterthan the thicknessof the lens l l that the latter isleft free to rotate on its screw 18 and to return to its normal axialalinement against its seat under action of the spring 13, and by makingthe lens engaging arms 16 resilient, angular locking means for the screwmay be employed. Another advantage of this construction is that byyieldingly retaining the lens, breakage is prevented both when theglasses fall and from uneven expansion of the arms and lens.

I have shown and described one illustrais formed tire embodiment of myinvention but 1 desire it to be understood that although specific termsare employed they are not for the purpose oi ,limitation, the scope ofthe invention being defined by the appended claims.

I claim:

31. A111 eye-glass mounting comprising the lens clamp having spacedapart arms normally separated by a distance greater than the thicknessof the lens, a screw .con-

necting said arms, sa d screw and one of said arms having complementalmeans for normally preyenting rotation of the screw, said larmsbeingsuflicientljy resilient to permit them to be pressed toward eachother, whereby the screw may its rotation-preventing means to ,permitrotation thereof, a lens seat on one side of the axis of said screw, andresilient means on theoppositeside of the axis of the screw formaintaining a tension .upon the lens to press the latteragainstsaidseat.

2;. An eye-glass .mounting comprising a lens clamp having spaced apartarms normally separated by a distance greater than the thickness of thelens, a screw passed through and connecting said arms, said screw havingangular locking faces, one of saictarms having angular locking,facescomplemental to ,thoseof the screw to normally prevent rotation.of the latter, said arms Copies of this patent may be obtained for,complemental locking be disen 'a ed from D ID five cents each,oyagldressjng the being sufficiently resilient to permit them to bepressed toward each other, whereby said faces may be disengaged topermit rotationofthe screw, a lens seat on one side of the axis ofsa1dscrew,and

resilient means on the opposlte side of the axis of the screw formaintaining a tension upon the lens to press the latter againstsaidseat- 3. In an eye-glass the combination with a lens, of a clamp havingspaced apart arms o ma y epa d y a d sta g eater than ,the tlicknessofsaid lens, va screw supported by said arms and extended through the lens,to pnovide a pivot therefor, said screw and one .of said armshavingcomplemental means for normally ,preyenting rotation of the screw,said-armsfbeing snfiiciently resilient to permit them to b P QS wardeach other, whereby the ,screw may be disengaged from itsrotation-preventing means to permit rotation thereofla lens seat abovesaid ,pivot screw, ,and resilient means below said ,pivot screw forapplying a ,rotation tension ,to,th e 516118 ,to yieldably press it tosaid seat.

Intestinmny whereof I afiix my signature in presence of a ,witness.

EARLE J. R. nnarrnr.

Witness HO D BARLow.

as in n);

